The Joker made his debut in the first issue of “Batman” on April 25, 1940.

“Suicide Squad” follows the story the titular anti-hero team, which includes the likes of Deadshot (played by Will Smith), Harley Quinn (Margot Robbie), Killer Croc (Adewale Akinnuoye-Agbaje) and others. It is slated to be the third installment in DC Comics’ shared universe films, which includes “Man of Steel” and “Batman v Superman: Dawn of Justice.”

Here is a photo of the two of them looking VERY serious. Because space missions are serious stuff.

Space missions are serious, you guys. VERY serious. (Photo: NASA)

In recent years, astronauts have learned how cool it is to interact with other humans on Earth via the power of social media. Kelly is taking that to the next level with the launch of Geography Trivia from Space, via his Twitter account: @StationCDRKelly and giving away signed photos from space.

Of course, there’s also science behind the contest. One of Kelly’s duties while on ISS is to take images of Earth for planetary analysis. Kelly, and his five fellow crew members, circle Earth almost 16 times a day at a speed of about 17,500 miles per hour.